Dyfyniad APA

Spencer, H. (1971). Herbert Spencer: Structure, function, and evolution. London: Joseph.

Dyfyniad Arddull Chicago

Spencer, Herbert. Herbert Spencer: Structure, Function, and Evolution. London: Joseph, 1971.

Dyfyniad MLA

Spencer, Herbert. Herbert Spencer: Structure, Function, and Evolution. London: Joseph, 1971.

Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.